Thanks for the input. I think my first instinct, to go for the DL status match is probably he way to go. I've probably flown 12 trips on DL vs 1 on AS since Sept, and this looks to continue.

A couple more questions:
If I get a platinum or reserve Delta Amex, do the initial bonus MQMs count toward the 90 day challenge?
My next trip is a red eye 4 days from now. Is there a lag between the time I submit the status match form, and when the 90 day clock starts?